Balsam Wool

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[Wood Conversion Co.] A trademark for an Insulation made from shredded wood. First made in the 1920's by Forest Weyehaeuser, balsam wool insulation contained wood fibers treated with borax (fire-retardant) and asphaltum (for loft) then sealed in kraft paper.

Synonyms and Related Terms

Forest Weyerhaeuser Balsam Wool Sealed Insulation

Resources and Citations

  • G.S.Brady, Materials Handbook, McGraw-Hill Book Co., New York, 1971 Comment: p. 389
  • Dictionary of Building Preservation, Ward Bucher, ed., John Wiley & Sons, Inc., New York City, 1996